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Two modes of biofilm formation by Bacillus cereus 905

Two modes of biofilm formation by Bacillus cereus 905

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中国植物病理学会2015年学术年会

作者： GAO Tan-tan LUCY Foulston CHAI Yun-rong richard losick LI Yan WANG Qi Department of Plant Pathology China Agricultural University Department of Molecular and Cellular Biology Harvard University Department of Biology Northeastern University

The ability to form multicellular communities known as biofilms is a widespread adaptive behavior of *** of the Bacillus group of bacteria have been found to form biofilms on plant roots,where they protect against pathogens and promote *** the case of the model bacterium Bacillus subtilis,the genetic pathway controlling biofilm formation and the production of an extracellular matrix is relatively well ***,it is unclear whether other members of this genus utilize similar *** 905,isolated from the roots of the wheat,is a plant-associated strain with function of promoting the growth of the *** determined that it could form biofilms by two seemingly independent *** one mode,the floating biofilms（pellicles） formationof *** appeared to rely on orthologs of many of the genes known to be important for *** biofilm *** the second mode,we reported that *** 905 formed submerged,surface-associated biofilms and in a manner that resembled biofilm formation by the pathogen Staphylococcus *** alternative mode,which did not rely on ***-like genes for pellicle formation,took place under conditions of glucose fermentation and depended on a decrease in the pH of the *** two modes of behavior appeared to be achieved in radically different ways and were likely operating under different environmental *** principal contribution of this investigation is the discovery that a plant-root-associated strain ***（905） could form two kinds of biofilms that are produced by two seemingly unrelated *** toto,our genetic analysis of *** biofilm formation sheds light on how a similar outcome,biofilm formation,can be achieved in different ways and this maybe provide an evidence of that *** can survive ubiquitously in the complicated environment.

关键词： Bacillus cereus biofilm pellicle

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Molecular Biology of the Gene 5th ed.

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2004年

作者： James D. Watson Tania A. Baker Stephen P. Bell Alexander Gann Michael Levine richard losick

ISBN: (纸本)9780805346350

Every student package automatically includes a CD-ROM and access to a website containing tutorials, molecular models, and *** long-awaited Fifth Edition of James D. Watson's classic text, Molecular Biology of the Gene, has been thoroughly revised and is published to coincide with the 50th anniversary of Watson and Crick's paper on the structure of the DNA double- *** being completely updated, the new edition retains the distinctive character of earlier editions that made it the most widely used book in molecular biology. Twenty-one concise chapters, co-authored by five highly respected molecular biologists, provide current, authoritative coverage of a fast-changing discipline. The completely new art is printed in full colour for the first *** into four parts, the first (Genetics and Chemistry) begins with an overview of molecular biology, placing the discipline in historical context and introducing the basic chemical concepts that underpin our description of molecular biology today. The second part (Central Dogma) forms the heart of the book, describing in detail the basic mechanisms of molecular biology. The third part of the book (Regulation) deals with how gene expression is regulated - from the examination of basic mechanisms that regulate gene expression in bacterial and eukaryotic systems, to a description of how regulation of gene expression lies at the heart of the process of development. Recent findings from sequencing whole genomes of several animals have revealed that they all share essentially the same genes. The last chapter in the regulation section looks at how changes in gene regulation can account for how different animals can be made from the same genes. The final part of the book (Methods) deals with the techniques and methods used in molecular biology.[Contents]I. CHEMISTRY AND GENETICS.1. The Mendelian View of the World.2. Nucleic Acids Convey Genetic Information.3. The Importance of Weak Chemical Interactions.4. The Impo

关键词： Molecular biology.

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